use volume cache

.drone.yml

@@ -3,8 +3,18 @@ type: docker
 name: default
 
 steps:
+- name: restore-cache
+  image: drillster/drone-volume-cache
+  volumes:
+  - name: cache
+    path: /cache
+  settings:
+    restore: true
+    mount:
+      - /root/.cache/pip
+
 - name: static_analysis
-  image: "python:3"
+  image: "python:3.8"
   commands:
   - pip3 install pylint bandit mccabe
   - pip3 install -r requirements.txt
@@ -13,6 +23,16 @@ steps:
   - find . -name "*.py" -exec python3 -m mccabe --min 3 '{}' + || if [ $? -eq 1 ]; then echo "you fail"; fi
   - bandit -r . + || if [ $? -eq 1 ]; then echo "you fail"; fi
 
+- name: rebuild-cache
+  image: drillster/drone-volume-cache
+  volumes:
+  - name: cache
+    path: /cache
+  settings:
+    rebuild: true
+    mount:
+      - /root/.cache/pip
+
 - name: kaniko
   image: banzaicloud/drone-kaniko
   settings:
@@ -33,3 +53,8 @@ steps:
       from_secret: TEAMS_WEBHOOK
   when:
     status: [ failure ]
+
+volumes:
+  - name: cache
+    host: 
+      path: /tmp/cache

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.8
+FROM registry.kmlabz.com/birbnetes/ai-base-image
 
 ADD extractor_service requirements.txt /extractor_service/
 WORKDIR /extractor_service/